Define Infrastructure

Konvoy needs to know how to access your cluster hosts. This is done using inventory resources. For initial cluster creation, you must define a control-plane and at least one worker pool.

Define your infrastructure

1. Export the following environment variables, ensuring that all control plane and worker nodes are included:

   export CONTROL_PLANE_1_ADDRESS="<control-plane-address-1>"
   export CONTROL_PLANE_2_ADDRESS="<control-plane-address-2>"
   export CONTROL_PLANE_3_ADDRESS="<control-plane-address-3>"
   export WORKER_1_ADDRESS="<worker-address-1>"
   export WORKER_2_ADDRESS="<worker-address-2>"
   export WORKER_3_ADDRESS="<worker-address-3>"
   export WORKER_4_ADDRESS="<worker-address-4>"
   export SSH_USER="<ssh-user>"
   export SSH_PRIVATE_KEY_SECRET_NAME="$CLUSTER_NAME-ssh-key"
   

2. Use the following template to help you define your infrastructure. The environment variables that you set in the previous step automatically replace the variable names when the file is created.

   cat <<EOF > preprovisioned_inventory.yaml
   ---
   apiVersion: infrastructure.cluster.konvoy.d2iq.io/v1alpha1
   kind: PreprovisionedInventory
   metadata:
     name: $CLUSTER_NAME-control-plane
     namespace: default
     labels:
       cluster.x-k8s.io/cluster-name: $CLUSTER_NAME
       clusterctl.cluster.x-k8s.io/move: ""
   spec:
     hosts:
       # Create as many of these as needed to match your infrastructure
   
       # Note that the command line parameter "--control-plane-replicas" determines how many control plane nodes will actually be used.
   
       #
       - address: $CONTROL_PLANE_1_ADDRESS
       - address: $CONTROL_PLANE_2_ADDRESS
       - address: $CONTROL_PLANE_3_ADDRESS
     sshConfig:
       port: 22
       # This is the username used to connect to your infrastructure. This user must be root or
       # have the ability to use sudo without a password
       user: $SSH_USER
       privateKeyRef:
         # This is the name of the secret you created in the previous step. It must exist in the same
         # namespace as this inventory object.
         name: $SSH_PRIVATE_KEY_SECRET_NAME
         namespace: default
   ---
   apiVersion: infrastructure.cluster.konvoy.d2iq.io/v1alpha1
   kind: PreprovisionedInventory
   metadata:
     name: $CLUSTER_NAME-md-0
     namespace: default
     labels:
       cluster.x-k8s.io/cluster-name: $CLUSTER_NAME
       clusterctl.cluster.x-k8s.io/move: ""
   spec:
     hosts:
       - address: $WORKER_1_ADDRESS
       - address: $WORKER_2_ADDRESS
       - address: $WORKER_3_ADDRESS
       - address: $WORKER_4_ADDRESS
     sshConfig:
       port: 22
       user: $SSH_USER
       privateKeyRef:
         name: $SSH_PRIVATE_KEY_SECRET_NAME
         namespace: default
   EOF
   

3. Apply the new infrastructure file with the command:

   envsubst < preprovisioned_inventory.yaml | kubectl apply -f -
   

   preprovisionedinventory.infrastructure.cluster.konvoy.d2iq.io/preprovisioned-example-control-plane created
   preprovisionedinventory.infrastructure.cluster.konvoy.d2iq.io/preprovisioned-example-md-0 created
   

Prepare your machines

For DKP to install completely, you must turn off memory swap.

For DKP to install completely, you must stop firewalld, if enabled.

Verify firewalld is running before you deploy DKP. Use SSH to access each of the machines onto which you are deploying DKP, and check to see if ‘firewalld’ is running, using the command:

systemctl status firewalld

If firewalld is active, stop it with the command:

systemctl stop firewalld

After defining the infrastructure, define the control plane endpoint.